Holy damn its the troll with the paper thin walls. I forgot all about you.

The justification for (not necessarily a louder) a larger exhaust is that alot of vehicles with these systems are modified. Granted alot of them are kids with fart cans, but some of them are legit. If you put a turbo on your car, you're going to need something much bigger than your stock exhaust, generally around 3'' turbo-back. This increases the VE of your engine, as well as the power. The side effect is, the car is louder. Since florida has no inspections and no emissions laws, we are free to modify our cars in any way we please, and you are free to reinsulate your paper thin house, or move to an apartment on a high floor of some building. Then you'd never have to deal with it "rattling your walls".

You won't change the minds of the 50,000+ members of this website, we're just going to make fun of you till you give up.